Type-writing machine.



No. 833,282. I PATENTED 0CT. 16, 1906.

J. ALEXANDER.A TYPE WRITING MACHINE.

APPLICATION FILED JUNE 2, 1902. RENEWBD NOV.l, 1905.

2 SHEETS-SHEET 1.

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J ALEXANDER TYPE WRITING MACHINE.

APPLICATION FILED JUNI: 2, 1902. RBNEWBD N0v.1,19o5.

2 SHEETS-SHEET Z.

INVENTUR .fesse Aleman der UNITE-Dj srATEs-PATENE oEEioE. e

-JEssE ALEXANDER, or .BROOKLYN'NEWYOEK AssieNoR, BY NiEsNE AssiGNMENTs, To LEE ALEXANDER, 'KirriE ALEXANDER, JE., JEssE ALEXANDER, JR., AND-YTYVEALEXANDER.

TYFyE-wnlTlNe MACHINE.

fratentedoce. 16,1906.

Application iled June 2,1902. Renewed November 1, 1905. Serial No. 285,369.

T aZZ whom it Winry concern:Y Be it known that I, JEssE ALEXANDER, a citizen of 'the United States, residing at Brookl in the county of Ki s"l State of ik ng New have invented certain new-,and useful .Improvements in Type-WritingfMachinos, of which the following is a full, clear; and exact description.

j M f invention relates to improvements inl the construction of type-Writing machines, and particularly to the key and type bar construction and mechanism therefor;

The particular construction herein shown and described'is adapted for use with a visible-writing type of machine, such as vshown more fully in my other applications: filed herewith, Serial Nos. 109,925, 109,927, and

- y The object of this invention is to secure a construction of the key and type bar mechanism and the supports and arrangement of' bar plate;a Fig. ll isy an enlarged able.

the lrey-bar-locking support.

Fig. 4 is a detail of,E

"details of construction of a the same which maybe easily assembledand will be held securely in place and be easy of operation.

The construction will be found to be economical and to provide a positive and certain action with a,touch`which is very desir- It consists in a construction as hereinafter to be described, and shown in the drawings.

Figure 1 is a side elevation and sectional view of the key and type bar mechanism and a' platen. Fig. 2 is a detail of a portion of Fig. 3 is a detail of the locking-plate. the end of the key-bar. v Figs. 5, 6, and 7 are key. Fig. 8 isgan enlargedd'etail of the end of a type-bar. Fie. 9 is an end ,view of the type-bar and blocl. Fig. 10 is a vertical projection of thetypedetail of the type-bloek-alining device. Fig. 1'2 is a detail of a section on the line X X of Fig. 10. In the particular form,V et mechanism shown vin the drawings, A isa'liyrbar pivoted at a, ina key-bar-supporting plate B. The end of the key-bar is formed by stamping sheet metal, asshown in Fig. 5, then twisting the end, as shown inFig. 6, and lastly folding it down to the form shown in Fig. ,7. The latefB is slotted, as shown at s, in vwhich recesses the pivots ofthe k .the key-bar pivot hasv been inserted/in the recesses of the supporting-plate B a lockingi plate C, having put in place ont supporting plate roject1ons or fingers c', 1s e bar c above the key-barand secured thereon to lock the plvots in the recesses in which they t.

It will be noted that all of the key-bars after'having been put in place may all be locked at' the same time by the locking-plate C, whichplate to make the adjustment more perfect may be slotted at c2 to coact with the screws by which itis attached to the supporting-plate B.

D is what may be termed an intermediate'- leverwhich`ispivoted atd in the leversupporting plate E. The construction of this lever-supporting plate and its locking means is similar to that of the key-bar-su porting plate 4and locking means. T e method of inserting these intermediate levers is similar to that ofl inserting the key-bars. The intermediate lever carries at one end, conveniently to* be engaged with the *key-bar, two small bearings or rollers d2 d2, which are adapted to give a smooth and rolling contact between the key-bar and intermediate lever.

The key-bars may be notched at a a to permit of the ready assembling of the parts. The key-bar may be provided at its undern eath portion with a small spring-finger a'-'.to assist in holding it in its proper normal position.

. The intermediate lever maybe drawn up to its normal position'by a spiral spring d3,

1 which for purposes oi adjustment may besecured at one end to an adjusting-screw e, working in the intermediate-lever-supporting plate or its equivalent.

The type-bar F is pivoted at f in a slot of the type-bar plate G in a manner similar to the pivoting of the key-bar and intermediate levers in their respective supports. A crosssection of a support is clearly shown in Fig. l2. These key-bar slots may be arranged substantially in a semicircle, as shown in Fig. 10. The lower end or tail of the type-bar is curved down and back, asshown, to engage with the guide barsor rollers d4, carried by the intermediate lever.

It will be noted that the intermediate lever is constructed in such a peculiar manner, that IOS,

when in its normal position, as shown in full lines in Fig. l, the Weight of the .parts is Veryv nearly balanced 'about the pivotv d, so that the vraction of the mechanism is made muc 5. more smooth and easy.

I have shown in Fig. 1 the key and type bar mechanism in full lines in .the normalposition of rest and in dotted lines in the posi.` tion in which they would be when printing. If desired, the type-bar plate G'may carry an adjustable ,stop-'screw g in line with 'the positions Which the type-bars Will take whenv printing 'forthe pu ose of regulating the blcwv which the 'typelock may deliver -u'pon 15 the-platen 2H.' When the type-'bars `are in t'l-reir normal or rest position, the `back of the end `of the type-bar or type-blockv may rest upon v'a pad held in place in the supporting-- guide J'.-

the construction of the type-bar and typeabar block which I have preferred to use and have shown'herein in Figs. 1 and 9. the

v type-block f2 is preferablyl made separate' -fn "n the type-bar 'and of such a 'form as to 2 5 engage With the end of the type-bar and be adjusted thereon by means of lscrews Fitting in a slot f 3, as in Fig. 8', at the end of the typebar. The type-bar-plate G (indicated in Fig. 1

3o in section) 'is shown in vertical projection `in Flg. 10. In this latter figure will appear,

more clearly the alining-posts K K, in which are set the ball-bearings for aliningthe typeblocks at the 4striking or printing position.

Y 35 These posts are, as shown, preferably adjust# ed about their. pivots L by 'means of setserews Working in cooperation Witlra projection from 'the upper part of the ty e-bai` plate. To assist in holding these aining- 4o posts in 'their proper operative positions, Il

have provided a peculiar-shaped s'pring-like brace -or arm. extending fromthe posts at either side. The outer end of these springbraces M M may be secured by screws to the 45 type-bar plate -G and being integral with the post will arl'ord a means for holding the setscrewA of the post in operative en agement with the projection from the type- )ar plate. lf ilt is desired, the ball-bearings k may be 5o provided with adjust ing-screws k2, as shown more clearly in Fig. 1l, so that therequisite degree ol' freedom of action of the balls maybe provided. F or "the purpose of moroseeurely holding the adjustingserew k3 in 'place 55 Ihave provided in Fig. 11 set-nuts, asshown.

65 n wir te maar on vhispano-n of rig. i,

that' the E@ parts of t effected that the touch "of the vmechanism is of the stroke. This is 'sufficient lto movethe ltinct .manifold copies.

i Vsitioning and proportions ofthe etype and bar movements are so most -easy and perfect. As before mentioned, the intermediate lever D 4may be 7o balancedmost readily upon vits pivot d when inits normal position of rest. In this osition', as shoW'r'iA in full lines, the Weight o thel key-bar is disposed in suchy a way that the .turning moment about its pivot due to its Weight Will b e when once started forwardV very nearly e ual to the turning moment of the type-bar about its .pivot f due to itsv Weight with associated parts. en -a key is depressed, it is therefore merely necessary 8o in order to bring the typeinto printing positionto give a force suicie'nt toove'rcome the adjusted tension of the springsa2 and d3, )op`vv erating, respectively, in conjunction with the key-bar A and vintermediate lever D. As the type-bar ascends and the amount of force necessary to raise the type-block to itsprinting 'position in-contact"With-jthe roller in creases it will be noted that theleng'th ofthe key-bar is a constant,` While. its arm which acts to draw the intermediatelever down is decreasing-but veryslightly in going to the dotted position. .At the same time the leverarmof the type-bar by. which the turning moment is transmitted from the intermediate le# lver gradually increases i as the Y bearings d* ltravel down the curve of the tail F way while the force dueto the 'touch of the op- In xthis erators ingermay bejappronimately -'a` 'constant 'quantity .'during the stroke the type-v block gathers considerable momentum Iasit a proaches the printing-surface, so that a s iarp impact isproduced `at'the upperend universal bar N. In this Way a movement' .is eifceted which is speeiallyeflicacious. 'in

manifolding, where a strong, sharp,and sud-V den blowof the type upon the pivotis. absolutely necessary 'in produci n 1; 'clear` and -dis- This effect of 1in-1ro crease of the striking force of the blow is further heightened by the fact that' when the intermediate lever is once started from its balanced position in full :lines its Weight is almost immediately thrown upon the side, which would tend to further add to the'force of the blow. When adjusting the levers in their proper positions to 'get :the tension de-V sired, the small `spring d3', which regulates the positionof the intermediate lever, may be .I 2oadjusted by means of the adjustingfscrew e l. in simple manner. In a similar manner the pressure of the adjusting spring-fingere'2 may be effected.

At N is shownin section asmall portion'df the end of the universal. bar, Wh1ch,as its name implies, is locatedi'n such positionns ,to be operated by the shoulder "a-of any one ofthe type-bars just previous to the printing position. 0n aninspection of Fig. 1 @ift W1 13o IOS;

vbe noted that this universal bar will not be beyond this point of the universal bar is noty shown in this application, since its preferred form is covered in another application which is filed for `the purpose. Among the functions of the universal bar which is common to machinesgenerally of this type is that f operating the ribbon movement and the carriage movement. The universal bar being situated directly hack of the type-bar pivots n insures a quick and powerful blow dellvered at the proper instant.

The keyboard may be arranged as desired; but it is preferred to have it of the twocase or single-shift class in which each typeblock is provided with two type-faces.

Obviously many of the advantages of con struction could be utilized-in Aother forms of machines; but -it is particularly valuable in the type of visible-writing machines.

What I claim is- 1. In a type-writing machine, a key-bar, a spring-linger adjustment therefor, an intermediate lever, means for connecting said lever with said key-bar, a spiral spring adjustment for said lever, a type-bar and an arm curved downward and outward and projecting from said type-bar for engagement with said intermediate lever, substantially as described.

2. In a type-writing machine, a pivoted key-bar, an intermediate lever pivoted above said key-bar, a roller-bearing connection between one end of said lever and said key-bar, a type-bar pivoted above saidlever and have ing a downward and outwardly projecting curved arm for engagement with aroller-bearing connection on said intermediate lever.

3. In a type-writing machine, a key-bar, an intermediate lever, means Jfor connecting said bar and lever, a type-bar and a rolling means of connection between said lever and said type-bar, a curved projecting arm from said typebar for coacting with said means of connection so that as said type-bar is raised its operating-lever arm increases in length, substantially as described.

.4. In a type-writing machine, a key-bar, an intermediate pivoted lever, means for connecting said bar andlever, a type-bar and a rolling means of connection between Vsaid lever and said type-bar, a curved projectingr arm from said type-bar coacting with said means of connection so that as said type-bar is raised its operating-lever arm ,increase's'in length, and a shoulder bar back of said pivot for engagement Wi l universal bar, substantially as described.

5. In a type-writing machine, a key-bar., an i intermediate lever, a type-bar, rolling means of connection between said intermediate lever and said keyand type bars,.said intermediate lever having a backwardlypro jecting arm and a spiral spring connected at one end of said arm land at the other to an adjustine-screw, substantially as described.

6. n a t an interme iate lever, a type-bar, a pair of roller-bearings carried by said. intermediate lever for engagement with said key-bar, said key-bar having indentations asshown for the purpose of assembling lthe parts, and means of connection between said intermediate lever .and said type-bar, substantially as described;

7. In a type-writing machine, akey-bar, an intermediate lever, a type-bar, a pair of roller-bearings carried by said intermediate lever for engagement with said key-bar, a second pair of roller-bearings carried by said lever for engagement with said type-bar, substantially as described.

S. In a type-writing machine, an intermediate lever, a t e-bar, a rolling connection carried at one en of said intermediate lever for engagement with said key-bar, and a pair of roller-bearings carried by the other end of said lever for engagement with a curved rejecting arm of said type-bar, substantiallv as described.

9. In a type-writing machine, a key-bar, an intermediate lever, a type-bar, a pivot for said lever, a forwardly-projecting arm of said lever carrying roller-bearings for engagement a key-bar,

lwith said key-bar, an upwardly-projecting arm of said lever carrying roller-bearings for engagement with a curved proj ectin arm of said type-bar, substantially as descri ed.

10. In a type-writing machine, a pivoted key-b ar, an intermediate lever pivoted above the key-bar, a roller-bearing connection between one arm of said lever and said key-bar, a pivoted type-bar having a projecting curved arm, and a roller-bearing connection between said curved arm and one arm of said intermediate lever.

.inssn ALEXANDER.

pe-Writing machine, a key-bar, y

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